👉 Esociforms are a family of marine invertebrates that include many different species, including the sea urchins. They are characterized by their unique shape and size, which is often described as "ecological." These animals have a small body size (around 0.2 to 1 cm) but are able to grow up to several meters in length due to their elongated cephalopods. Esociforms also have a complex nervous system that allows them to communicate and